Kurt let the other speak, because he wasn't Rachel and he did value their opinions. To a point. But neither was he going to let Rachel dictate their entire summer. He saw Quinn slip in, and gave the girl a minute to catch up.
"Here's the thing. I'm not willing to give up my entire summer to listen to Rachel get more solos." He looked around the room, giving people time to let that sink in. "So I think we need to have a few rules set in place, before Rachel springs her surprise on us." He smirked, and looked around the room again.
"What I propose is this. We'll agree to a set amount of Glee Club practices a week, and work out a schedule that works best for most of us." He paused again, not above a bit of dramatics himself. "And we have Rachel agree that she gets no more than three solos. The rest of us need a reason to come to practices, after all."